| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes | 343 | 
                                    
                                    7.9%
                                 | 
| 3 | No | 4003 | 
                                    
                                    91.7%
                                 | 
| 8 | DK | 19 | 
                                    
                                    0.4%
                                 | 
| Sysmiss | 644 |